Vacuum cleaner



Sep@ 16 1924.

Patented Sept. 16, 1924.l

NITED STATES 1,508,597 PATENT OFFICE.

GEORGE CLEMENTS, OF CHICAGO, ILLINOIS, ASSIGNOR TO CLEMENTS MFG. C0., F CHICAGO, ILLINOIS, A CORPORATION 0F ILLINOIS.

VACUUM CLEANER.

Application Bled August 4, 1921. Serial No. 489,672.

To all whom it may concern:

Be it knownv that I, GEORGE CLEMENTS, a'citizen of the United States, residing at Chicago, in the county of Cook and State of Illinois, have invented a certain new and useful Improvement in Vacuum Cleaners, of which the following is a specification.

My invention relates to a vacuum cleaner,

and particularlyy to a vacuum cleaner inwhich a brush, lying in the suction inlet, is frictionally driven from floor contacting rollers.` One object of my invention is to l provide. a brush bearing, which shall at the same timev support the brush and hold the brush yieldingly in contact witli'the frictional brush-driving rollers. Another object is the provision of a guard for the suction inlet which shall prevent the penetrations of the carpet edge into the suction inlet. Other objects will appear from time tov time in the course of the specifications. l illustrate my invention more or less diagrammatically in the. following drawings, wherein,

Fig. 1 is a view from below of the suction inlet, showing the brush bearing and driving means and the brush guard. F Fig 2 is a section .on the line 2-2 of Fig. 3 is a section on the line 3--3 of Fi 1.

Fig. 4 is a section on the 'line 4-4 of Fig. 1.

Like parts are represented bylike ,letters and numbers throu hout the drawings.

A is a suction in et casing being formed with substantially parallel inlet lips A A connected to the usual type of vacuum cleaner, not herein shown.

Rotating within the suction inlet is 'a brush shaft B, and mounted thereon, a brush cylinder or body B which supports the brush bristles B2. -At the extremities of the shaft B are mounted the` rollers Bs B8 through which the shaft and brush are rotated, from the floor contacting wheels B4 B44 which are pivoted in the rearward l projections Bli from the inlet lips A. The

roller Ba is preferably provided with an anti-frictional coating or surface B which may be in the form of a rubber band or rim about the roller. y

Mounted-at yC--'-C inthe forward side of the'casing A are S shaped springs C C which are preferably formed of the large bend C2 and the small bend or loop C". The springs are so formed that the loops C8 engage and support the ends of the shaft B and not only support the brush at the proper distance from the floor, but tend to press the rollers B3 against the floor engaging rollers B4. 'Ihe spring C is light and is therefore provided with a relatively stiffer reinforcing spring C4 which tends to prevent deformation and de ression of the lighter spring. Both' springs are held against sideways movement by the lug A2.

Along the inside surface of each suction inlet wall A is a groove D substantially parallel with the ground. Mounted in these grooves isa zig-zag guard D preferably -of wire, which is so bent thai: alternate turns or. corners of the Wire engage opposed sides of the inlet nozzle and seat wire or guard in lhe opposed grooves.

While I have illustrated a Working device which is actually being manufactured and sold, it is obvious that many variations in size. number, shape, and relation of parts might be made without departing from the spirit of my invention. The nature of the -spring bearing and the method and location of attachment might be changed. I thereforewish my description and drawings to be taken broadly and as merely illustrative of the nature 'of my invention.

The use and operation of my invention are as follows: I have illustrated a type of Vacuum cleaner in which a light brush is rotated in the suction inlet, being driven from ground contacting rollers, which in vturn contact rollers on the brush shaft.y In

order to prevent wear of the rollers on the brush shaft from affecting the drive of'the brush, and in order to prevent. slipping of the brush in relation to the traveling floor contacting rollers, I provide a leaf sprin bearing, roughtly S-shaped, one end o which foms a partly closed loop, which sup- V present application isobtained by having The brush guard -is illustrated as a simple zigzag wire, the opposite cleaners and `ends of whichy it in grooves inside of and parallel with the lips of the suction inlet. This wire has sufficient spring tension to set itself rmly within the grooves, but can easily be removed b -manual pressure. 'It will be noted that te oint Where the restricted passageenters t e bag body proper is an inch or more away from the connection of the restricted neck with the cleaner casing. This prevents the lodging of dust or. foreign material about the bottom of the bag'as when a tube or loose ap is used, such material being likely under those circumstances to form a solid mass or ring about the bag inlet, with the resultant constriction of .the exhaust passage and the reduction in the efficiency of the cleaner. This result willl be obtained in a variety of ways, but in the the bod of the ba stop short of4 the point where t e restricte inlet passage largely of the si e of the bag itself, so that there is no interval between the inlet passage or tube and the bag wall into which the dust can penetrate to form the above mentioned con'strictingl mass.

I claim:

In a vacuum cleaner, a suction nozzle, the opposed 1i s of said nozzle bein ooved a plane a jacent to and paral e with the lower edge of the nozzle, and a ard element adapted to be yieldingly an removal neck is connected to the casing,and by further formin the tapered..

mounted in the suction nozzle, portions ofy said guard element penetrating said grooves on each side of the nozzle. f

Signed `at (Jhica `county of Cook and btate of Illinois, this 28th day of July, 1921 GEORGE CLEMENTS, 

